19771857

素因数分解:

$3^4\times 7^1\times {\mathrm{34871}}^1$

素因数の和:34890

約数の個数: 20

約数和(自身を含む): 33756096

約数和(自身を除く): 13984239

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 34871, 104613, 244097, 313839, 732291, 941517, 2196873, 2824551, 6590619, 19771857]

約数ペア:

[(1, 19771857), (3, 6590619), (7, 2824551), (9, 2196873), (21, 941517), (27, 732291), (63, 313839), (81, 244097), (189, 104613), (567, 34871)]